QUERY CRITERIA 查询准则
Criteria Query 条件查询 ; 标准化对象查询
Query By Criteria 提供了完善的按条件 ; 通过条件查询 ; 对象按条件查询 ; 按条件查询
Query expressions are the core units or nodes that are assembled in a tree to specify a CriteriaQuery. Figure 1 shows the hierarchy of query expressions defined in the Criteria API.
查询表达式是在一个树中组装的核心单元或节点，用于指定CriteriaQuery。
Query parameters are usually meant to provide input to a service, such as filtering criteria, sorting, and other business level details.
查询参数通常用来为服务提供输入，如筛选标准、排序和其他业务级详细信息。
The Criteria API is also a mechanism for building queries programmatically and so is often referred to as a dynamic query API.
Criteria API 还是以编程的方式构建查询的机制，因此通常被称为 动态查询 API。
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